The following constants can be useful: Charge of electron Mass of the electron Mass of the proton lel = 1.6 x 10-19C; m = 9.11x10-31 kg ; m = 1.67×10 kg : 13 A) 1.25 x 10¹ Acceleration due to gravity Permittivity of free space Coulomb's constant π = 3.14 Choose the best answer or the Q1. A piece of plastic has a net charge of +1.00 μC. How many fewer electrons than protons does this piece of plastic have? B) 6.25 x 10¹2 C) 2.50 × 10¹3 D) 3.60 × 10¹⁹ Q2. Three point charges Q1-0.9 μC; Q2=-3.0 μC and Q3= -0.9 µC are placed as shown in figure, where the distance a = 9.0 cm. The magnitude of the electric force (in N) acting on Q2 is A) 12.7 B) 2.8 C) 4.2 D) 3.0 Q3. Two stationary point-like objects with charges 91 and 92 are shown in the figure along with a sketch of E-field lines representing the electric field produced by them. What can you determine from the sketch? Q4. Two-point charges, q1 and q2, are placed 0.30 m apart on the x-axis, as shown in the figure. Charge qi has a value of -1.0 x 10-9 C. If net electric field at point P is zero, then the magnitude of charge q₂ is: A) 4.8 x 10-BC B) 3.1 x 10 C g = 9.8 m/s² &=8.85x10-12 c² /Nm² ke=9x10⁹ N.m²/C² E) 3.01 x 1023 Q₁ A) q, is negative and q2 is positive; the magnitudes are equal. B) q, is positive and q2 is negative; the magnitude of q, is greater than the magnitude of 92. C) q, is negative and q2 is positive; the magnitude of q1 is less than the magnitude of 92- D) q, and q₂ have the same sign; the magnitudes are equal. and 92 have the same sign; the magnitude of q, is greater than the magnitude of 92 E) 91 P 91 -0.20 0 C) 6.6 x 10-8C P' 92 0.20 0.40 0.60 D) 1.6 x 10-8C Q₂ a x(m)
The following constants can be useful: Charge of electron Mass of the electron Mass of the proton lel = 1.6 x 10-19C; m = 9.11x10-31 kg ; m = 1.67×10 kg : 13 A) 1.25 x 10¹ Acceleration due to gravity Permittivity of free space Coulomb's constant π = 3.14 Choose the best answer or the Q1. A piece of plastic has a net charge of +1.00 μC. How many fewer electrons than protons does this piece of plastic have? B) 6.25 x 10¹2 C) 2.50 × 10¹3 D) 3.60 × 10¹⁹ Q2. Three point charges Q1-0.9 μC; Q2=-3.0 μC and Q3= -0.9 µC are placed as shown in figure, where the distance a = 9.0 cm. The magnitude of the electric force (in N) acting on Q2 is A) 12.7 B) 2.8 C) 4.2 D) 3.0 Q3. Two stationary point-like objects with charges 91 and 92 are shown in the figure along with a sketch of E-field lines representing the electric field produced by them. What can you determine from the sketch? Q4. Two-point charges, q1 and q2, are placed 0.30 m apart on the x-axis, as shown in the figure. Charge qi has a value of -1.0 x 10-9 C. If net electric field at point P is zero, then the magnitude of charge q₂ is: A) 4.8 x 10-BC B) 3.1 x 10 C g = 9.8 m/s² &=8.85x10-12 c² /Nm² ke=9x10⁹ N.m²/C² E) 3.01 x 1023 Q₁ A) q, is negative and q2 is positive; the magnitudes are equal. B) q, is positive and q2 is negative; the magnitude of q, is greater than the magnitude of 92. C) q, is negative and q2 is positive; the magnitude of q1 is less than the magnitude of 92- D) q, and q₂ have the same sign; the magnitudes are equal. and 92 have the same sign; the magnitude of q, is greater than the magnitude of 92 E) 91 P 91 -0.20 0 C) 6.6 x 10-8C P' 92 0.20 0.40 0.60 D) 1.6 x 10-8C Q₂ a x(m)
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter23: Electric Forces
Section: Chapter Questions
Problem 35PQ: Two 25.0-g copper spheres are placed 75.0 cm apart. Each copper atom has 29 electrons, and the molar...
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